2.2. Hierarchical Data and the Closure Property

2.2.1. Representing Sequences

Exercises:

• 2.17 . Last element of list
• 2.18 . Reverse
• 2.19 . Change coins of different currencies
• 2.20 . Dotted-tail notation
• 2.21 . A list of the squares
• 2.22 . Square-list with iterative process
• 2.23 . The procedure for-each

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